A Study on the Association between Low Maternal Serum Magnesium Level and Preterm Labour

Table 6

Relationship between serum magnesium and the major risk factors for preterm labour.

Risk factors	𝑁=200	Total serum magnesium level (mg/dL)			𝑃 value
		Mean ± SD (mg/dL)	Min	Max
Maternal age
16–20	20	1.77±0.3	1.46	3.10	0.099
21–25	32	1.81±0.4	1.39	2.97
26–30	63	1.69±0.3	1.30	3.00
31–35	52	2.10±0.1	1.75	2.89
36–40	33	1.97±0.2	1.66	2.45
Social class
Upper	31	2.01±0.6	1.69	3.11	0.101
Middle	107	1.68±0.5	1.30	2.97
Lower	62	1.88±0.4	1.24	2.99
History of midtrimester miscarriage
Yes	69	1.88±0.4	1.30	2.80	0.716
No	131	1.80±0.4	1.25	2.99
History of preterm labour
Yes	38	1.66±0.5	1.30	2.60	0.059
No	162	1.87±0.4	1.25	2.99